Aluminum Reacts with Oxygen According to the Following Reaction: 4Al(s) $\rightarrow$

Aluminum reacts with oxygen according to the following reaction: 4Al(s) + 3O₂(g) $\rightarrow$ 2Al₂O₃(s) If 12 moles of aluminum are combined with 6 moles of oxygen, how many moles of Al₂O₃ should form?

A) 4 moles
B) 8 moles
C) 6 moles
D) 12 moles
E) 20 moles